The National Weather Service has issued a Winter Weather Advisory for much of the New York City area—including Peekskill—effective Saturday morning into Saturday night. At the moment, 2 to 4 inches of snow looks like a good bet, with locally higher amounts possible.
As recently as Thursday morning, most computer models showed little more than a disorganized system off of the Atlantic coast with minor snow accumulations possible for coastal areas and a few harmless snow showers in the Hudson Valley. Over the past 24 hours, however, models have shown the system getting its act together and trending further to the north and west. The trend is your friend, and as such it is not out of the realm of possibility that late Friday afternoon forecasts further increase snow totals.
Temperatures will be in the 20s when the snow starts to fall Saturday morning, topping out around freezing during the day Saturday. In fact, borderline temperatures could be the only thing preventing parts of Long Island from seeing accumulations of a half foot or more. Snow tapers off from southwest to northeast late Saturday night.